Robben amazed by Bayern turnaround under Heynckes

In the space of four Bundesliga matches, Bayern have gone from five points behind Dortmund to four clear, stunning their Dutch star

Arjen Robben concedes the speed with which Bayern Munich have soared past Borussia Dortmund in the Bundesliga has taken him by surprise.

Dortmund were unbeaten in their first seven league fixtures under Peter Bosz and sat five points ahead of Bayern at the summit, but a drastic change in fortunes has seen them triumph just once in their last six in all competitions.